Product Description:

The EHA-CON-201-A-20 is a power supply and signal-conditioning module manufactured by Vickers for the EHA Power Supplies series. In automated machinery, the device furnishes regulated reference voltages and reproduces process command signals, while its built-in fault channel informs the controller when supply quality or internal parameters fall outside allowed limits. Using one compact board, it bridges the plant's low-voltage bus to proportional valves, sensors, and other field hardware that depend on stable excitation and clean command signals for repeatable machine response.

During operation, the unit draws from a nominal input of 24 V DC, yet it stays online anywhere within 18–36 V DC, absorbing typical bus dips without loss of regulation. Overall demand is just 6 W, which helps limit cabinet heating without adding much thermal load to the enclosure. Front-end jumpers allow selection between 0–10 V / 0–20 mA / 4–20 mA command formats, and the chosen option is converted internally to a precision, low-impedance ±10 V DC output for the downstream actuator. This conversion supports control accuracy because the outgoing rails are generated by regulated converters rather than passed directly from a noisy field signal.

The module supports continuous duty from 0 to 50 °C, while storage when unpowered can extend between −25 to 85 °C without component damage. The enclosure carries an IP20 rating and snaps onto a DIN EN 50022/50035 rail, which helps simplify installation alongside other control modules in a cabinet. Should an internal error occur, the device grounds its output and issues a dedicated fault-switching signal, which helps prevent unintended actuator movement. Auxiliary terminals provide a +15 V rail at 50 mA for sensor power and a +10 V reference at 5 mA for calibration tasks, and the design tolerates ±10% peak-to-peak ripple on the DC bus without disturbing these regulated outputs.